Thank you for the reply.Yes it appears that the issue is the earth.I assume as you say the the earth side of it comes from the Ecu, then the problem lies there ?

Hello,looking for some help.I have a 2001 diesel bongo.I have just had the turbo recondiioned,but not working when i drive.There is a solenoid with 2 wires to it.This has a problem at the earth side.If i give a constant earth to it turbo works and light goes out on the dash.Does anyone know what the ...